An F is a failing grade worth zero toward a student's grade point average.

VOA: special.2009.03.05

But the F.A.O. representative in Liberia warned about spraying pesticides from airplanes because of the risk of additional water pollution.

VOA: special.2009.01.27

Reuters news agency reported that he said the I.M.F.is working to find a solution in the next few weeks.

VOA: special.2009.05.16

A new report by the I.M.F.estimates that the world economy will shrink by one and three-tenths percent this year.

VOA: special.2009.04.24

Michael O'Donnell says the F.A.A.is spending between seven hundred fifty thousand and one million dollars a year on radar research.

VOA: special.2009.04.01

The F.A.O.says that by signing the treaty, governments promise to take steps to guard their ports against ships involved in such fishing.

VOA: special.2009.12.08

A calf is a young cow. A young female cow, especially one that has not yet had a calf, is called a heifer: H-E-I-F-E-R.

VOA: special.2009.07.21

F.A.O.officials say the general ideas for an international agreement or treaty are now largely in place.

VOA: special.2009.02.10

Another principle supports competition. This week,in a speech, F.C.C.Chairman Julius Genachowski proposed two more.

VOA: special.2009.09.25

The A.F.L.also opposed extremists who used labor protests to change the social system.

VOA: special.2010.05.06

Most American colleges and universities use the grading system of A,B,C,D and F.

VOA: special.2009.03.05

The F.A.O.says fish piracy is difficult especially for developing countries to fight.

VOA: special.2009.02.10

The F.A.A.plans to test new radar systems at airports in Chicago,Illinois;

VOA: special.2009.04.01

Led by Samuel Gompers, the A.F.L.was different from earlier labor groups.

VOA: special.2010.05.06